For the following multiple choice questions choose the best answer (2 points each):
1. The three fundamental particles of the atom are
a. Nucleus, protons and neutrons
b. Positrons, quarks and neutrinos
c. Protons, neutrons and electrons
d. Positrons, quarks and anti-neutrinos
Answers: 3
Chemistry, 21.06.2019 13:00
In a closed or isolated system , matter can not be created or destroyed. it can change forms but is conserved true or false
Answers: 1
Chemistry, 23.06.2019 00:00
Exit what is the density of an object having a mass of 5.0 g and a volume of 45.0 cm3?
Answers: 1
For the following multiple choice questions choose the best answer (2 points each):
1. The three f...
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